Or, should I say, I Want That 3D "pop"! My favorite focal length has been around 100mm. 85mm will probably be okay as would 135mm. I'm looking for the following: Smallish size and weight - Most 135/3.5s are small enough, but the Canon 85/1.2, for example, is too big and heavy for my liking, as is the Rokinon 85/1.4. Sharp AT the shallow DOF aperture - Take the Rokinon 85/1.4. I'm not happy with its results wide open. And, if there is a hypothetical 92mm f1.7 with very good center sharpness by f2, then that'd be okay. Low cost - The Sony 55/1.8 is a bit short but might work because it's a modern lens and sharp wide open. But even if were an 85/1.8 at the same size, weight, and price, I don't know if I could swing $800. This $800 55mm is the measuring stick. If I can't get a great lens for $400 or less, I might just opt for the Sony which, on my budget, would mean it would be my only lens except for the 24-70 kit. So far I tried two copies of the Rokinion 85/1.4 and got rid of them both. I could work with Canon FD 50/1.2, but I'm sure it's not sharp until f2 or so. I have several 135mm f2.8 and f3.5 lenses but they need to be shot at f4 to get the subject sharpness I want. Tolerable but 135 is a bit long and f4 is a bit slow. I bought a Canon FD 85/1.8 and this is the best so far. I need to stop down a tad, however. The 100mm f2 version I heard is better. But, instead of buying willy nilly, I figured I'd ask some advice first. Thanks!